传输媒体是计算机数据通信时,收发双方进行数据交换的()通路。
A.物理信号
B.逻辑信号
C.编码信号
D.调制信号
参考答案:A
根据句子意思和所给的首字母完成单词.
1. He always r______ his bike to the subway station.
2. The bus ride usually t______ about 40 minutes.
3. When it r______, I often take a taxi home.
4. Every morning he l______ for school at around half past six.
5. In China, are bikes and buses the most popular means of t______?
6. In our school, a small n______ of students take the subway.
7. All living things d______ on the sun for their growth. (生长)
8. Taking a boat to go to school must be a lot more f______ than taking a bus.
9. Don't w______ about your mother . Let me look after her.
10. This picture is d______ from that one.
开关跳闸后,重合闸装置动作,开关自动合上后,自动装置再次动作跳闸的行为称为()
A.重合闸停用
B.重合闸不成功
C.重合闸未动
D.重合闸拒动